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   What is Rickettsia prowazekii?

   • Rickettsia prowazekii is an intracellular, gram-negative coccobacillus. It is an obligate parasite. R. prowazekii belongs to the genus Rickettsia and is the causative agent of epidemic typhus. The genus Rickettsia is composed of gram-negative bacteria. Rickettsiae are the closest known relatives of mitochondria in eukaryotic cells.

   Rickettsia Prowazekii - StatPearls - NCBI Bookshelf

   www.ncbi.nlm.nih.gov/books/NBK448173/

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   Can humans get Rickettsia prowazekii?

   • Humans are the usual host for Rickettsia prowazekii, which causes epidemic typhus. Host animals may or may not be ill from the infection. Rickettsiae and rickettsia-like bacteria are usually spread to people through the bites of ticks, mites, fleas, or lice that previously fed on an infected animal.

   Overview of Rickettsial Infections - Infections - Merck Manuals

   www.merckmanuals.com/home/infections/rickettsial-and-related-infections/overview-of-rickettsial-infections

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   How does Rickettsia prowazekii spread?

   • Rickettsia prowazekii infects the midgut epithelium of the louse, is shed in the louse feces, and is inoculated into louse-bitten skin by scratching or when rubbed into mucous membranes. The lice are not adapted to elevated body temperatures. When a person is infected and febrile, lice leave for a new host and spread infection.

   The Rickettsioses: A Practical Update - PMC - National Center for

   www.ncbi.nlm.nih.gov/pmc/articles/PMC6364315/

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   Is R prowazekii a typhus?

   • R. prowazekii belongs to the typhus group of Rickettsia. The genus Rickettsia was divided into spotted fever group (SFG) and typhus group (TG). Gillespie et al. added the transitional group (TRG) and an ancestral group (AG) recently.

   Rickettsia Prowazekii - StatPearls - NCBI Bookshelf

   www.ncbi.nlm.nih.gov/books/NBK448173/

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2. www.cdc.gov › typhus › epidemicEpidemic Typhus | Typhus Fevers | CDC

   www.cdc.gov › typhus › epidemic

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   Nov 13, 2020 · Epidemic Typhus. On This Page. Signs and Symptoms. Diagnosis and Testing. Treatment. Prevention. Epidemic typhus, also called louse-borne typhus, is an uncommon disease caused by a bacteria called Rickettsia prowazekii. Epidemic typhus is spread to people through contact with infected body lice.

3. www.ncbi.nlm.nih.gov › books › NBK448173Rickettsia Prowazekii - StatPearls - NCBI Bookshelf

   www.ncbi.nlm.nih.gov › books › NBK448173

   Aug 8, 2023 · It is an obligate parasite. R. prowazekii belongs to the genus Rickettsia and is the causative agent of epidemic typhus. The genus Rickettsia is composed of gram-negative bacteria. Rickettsiae are the closest known relatives of mitochondria in eukaryotic cells.

   • Author: Sami M. Akram, Megan Ladd, Kevin C. King

   • Published: 2023/08/08

4. en.wikipedia.org › wiki › Rickettsia_prowazekiiRickettsia prowazekii - Wikipedia

   en.wikipedia.org › wiki › Rickettsia_prowazekii

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   Rickettsia prowazekii is a species of gram-negative, alphaproteobacteria, obligate intracellular parasitic, aerobic bacillus bacteria that is the etiologic agent of epidemic typhus, transmitted in the feces of lice. In North America, the main reservoir for R. prowazekii is the flying squirrel.

   • Species: R. prowazekii
   • Family: Rickettsiaceae

   • Class: Alphaproteobacteria
   • Genus: Rickettsia

5. www.merckmanuals.com › home › infectionsOverview of Rickettsial Infections - Infections - Merck ...

   www.merckmanuals.com › home › infections

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   Rickettsiae and related (rickettsia-like) bacteria (such as Ehrlichia, Anaplasma, and Coxiella burnetii bacteria) are an unusual type of bacteria that cause several similar diseases, including the following: Rocky Mountain spotted fever. Epidemic typhus. Ehrlichiosis. Anaplasmosis. Q fever.

6. www.ncbi.nlm.nih.gov › pmc › articlesThe Rickettsioses: A Practical Update - PMC

   www.ncbi.nlm.nih.gov › pmc › articles

   Organisms of the genus Rickettsia occur throughout the world and are distributed among a variety of hematophagous arthropod vectors, which include ticks, lice, mites, and fleas. 1, 2 Despite the prevalence of these organisms in nature, they are often overlooked as an important cause of illness throughout the world.

   • Author: Lucas S. Blanton

   • Publish Year: 2019

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8. www.uptodate.com › contents › epidemic-typhusEpidemic typhus - UpToDate

   www.uptodate.com › contents › epidemic-typhus

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   Oct 23, 2023 · R. prowazekii is one of two members of the typhus group of Rickettsia known to cause human illness; the other member, Rickettsia typhi, causes murine typhus. Scrub typhus is caused by Orientia tsutsugamushi.

9. www.ncbi.nlm.nih.gov › books › NBK7624Rickettsiae - Medical Microbiology - NCBI Bookshelf

   www.ncbi.nlm.nih.gov › books › NBK7624

   The rickettsiae are a diverse collection of obligately intracellular Gram-negative bacteria found in ticks, lice, fleas, mites, chiggers, and mammals. They include the genera Rickettsiae, Ehrlichia, Orientia, and Coxiella. These zoonotic pathogens cause infections that disseminate in the blood to many organs. Rickettsia. Clinical Manifestations.